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From: dave@spool.wisc.edu (Dave Cohrs)
Newsgroups: comp.unix.wizards
Subject: Re: Window size in 4.3BSD and tset
Message-ID: <4280@spool.wisc.edu>
Date: Wed, 16-Sep-87 09:11:37 EDT
Article-I.D.: spool.4280
Posted: Wed Sep 16 09:11:37 1987
Date-Received: Fri, 18-Sep-87 07:16:24 EDT
References: <813@saturn.ucsc.edu>
Sender: news@spool.wisc.edu
Reply-To: dave@spool.wisc.edu (Dave Cohrs)
Organization: U of Wisconsin CS Dept
Lines: 34
Keywords: windows 4.3 tset
Summary: use stty to set your window size

In article <813@saturn.ucsc.edu> haynes@ucscc.UCSC.EDU (Jim Haynes) writes:
> [ ... ] if you change a terminal from 80-column
>mode to 132-column mode and run tset, the window parameters stay
>at 80 cols and vi continues to wrap around at the 80th column.
>
>Does anybody know why it should be this way, and why tset shouldn't
>set the window parameters regardless of whether they were found to
>be zero?

First, you don't need to log out to let "vi" know your window size
changed.  Check out stty(1).  If you do as you described, follow
that with the command:

	stty columns 132

and run vi (or, if you stopped it, just "fg" it) and it will get your
window size right.

Making "tset" set the window size parameters is a kludge at best.  The
reason you don't want it to do so in general is because lots of people
use these parameters for *real* windows, and windows, in general, can
change size to almost any shape you want.  I doubt that you'd want a
separate termcap entry for each possible window size.  Anyway, once you
set your window to some size, the window manager, or the program
maintaining the individual window, usually sets the window size
parameters automatically and send a SIGWINCH signal, so you don't have
to run "tset" or "stty" for your programs to know the new window size.
If "tset" were to reset these dimensions to your termcap dimensions,
all this would have gone for naught  (comments about whether the BSD
window method is right or not will happily be ignored).

Dave Cohrs                                             Proud member of NOTHING
+1 608 262-6617                             UW-Madison Computer Sciences Dept.
dave@cs.wisc.edu                 ...!{harvard,ihnp4,rutgers,ucbvax}!uwvax!dave